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17-letter words containing a, i, c

  • opportunistically — adhering to a policy of opportunism; practicing opportunism.
  • optical astronomy — the branch of observational astronomy using telescopes to observe or photograph celestial objects in visible light.
  • optical carrier 3 — (networking)   (OC-3) A SONET rate of 3 * 51.84 = 155.52 megabits per second, which matches STS-3.
  • optical carrier n — (networking)   (OC-n) A SONET rate of n times 51.84 megabits per second.
  • optical computing — (hardware)   (Or "Optical Signal Processing") Operating on data represented using electromagnetic radiation, e.g. visible light, instead of the electrical signals used in a conventional electronic digital computer. Electronic digital computers are built from transistors. These form components that store data and logic gates that perform the low-level Boolean operations such as AND, OR and NOT that are the basis of all digital computation. The optical equivalent requires material with a non-linear refractive index such that light beams can interact with each other to perform the same Boolean operations. Though the photons that carry optical signals offer some theoretical advantages over the electrons that carry electronic signals, there are many practical problems that would have to be overcome before optical computing could compete in terms of cost, power and speed.
  • optical isomerism — stereoisomerism in which the isomers are identical in molecular weight and most chemical and physical properties but differ in their effect on the rotation of polarized light.
  • organ-pipe cactus — a treelike or columnar cactus, Lemaireocereus marginatus, of Mexico, having a central, erect spine surrounded by spreading spines in clusters of five to eight, and funnel-shaped, brownish-purple flowers.
  • organic chemistry — the branch of chemistry, originally limited to substances found only in living organisms, dealing with the compounds of carbon.
  • organic psychosis — a severe mental illness produced by damage to the brain, as a result of poisoning, alcoholism, disease, etc
  • orifice discharge — Orifice discharge is a model for calculating how quickly a fluid will come out of a punctured vessel or pipe.
  • orthovanadic acid — an oxyacid of vanadium, known chiefly in the form of its vanadate salts. Formula: H3VO4
  • osculating circle — circle of curvature.
  • otolaryngological — Pertaining to otolaryngology.
  • otto von bismarck — Otto von [ot-oh von;; German aw-toh fuh n] /ˈɒt oʊ vɒn;; German ˈɔ toʊ fən/ (Show IPA), 1815–98, German statesman: first chancellor of modern German Empire 1871–90.
  • outside broadcast — An outside broadcast is a radio or television programme that is not recorded or filmed in a studio, but in another building or in the open air.
  • over-appreciation — gratitude; thankful recognition: They showed their appreciation by giving him a gold watch.
  • over-compensation — a pronounced striving to neutralize and conceal a strong but unacceptable character trait by substituting for it an opposite trait.
  • over-conservative — disposed to preserve existing conditions, institutions, etc., or to restore traditional ones, and to limit change.
  • overconcentration — the act of concentrating; the state of being concentrated.
  • pacific northwest — the region of North America lying north of the Columbia River and west of the Rockies
  • pacific tree frog — a common terrestrial frog, Hyla regilla, of western North America, having a dark stripe along each side of the head.
  • packaging company — a company that packages goods on behalf of the producer
  • pair of compasses — compass (def 7)
  • palace revolution — a challenge to or overthrow of a sovereign or other leader by members of the ruling family or group.
  • palaeoclimatology — the study of climates of the geological past
  • paleobiochemistry — the study of biochemical processes that occurred in fossil life forms.
  • paleoconservative — a person advocating an older, traditional type of conservatism, especially in politics.
  • papanicolaou test — Pap test.
  • paradoxical sleep — REM sleep.
  • paraperiodic acid — the crystalline compound H5IO6, an oxyacid of iodine
  • parathyroidectomy — the excision of a parathyroid gland.
  • paratungstic acid — an oxyacid acid of tungsten. Formula: H10W12O14
  • parted per tierce — tierced.
  • particle kinetics — Particle kinetics is the study of the movement of particles and the forces that cause this movement.
  • particle velocity — the velocity of a point in a medium that is undergoing wave motion.
  • particularization — to make particular.
  • pascal's triangle — a triangular arrangement of the binomial coefficients of the expansion (x + y) n for positive integral values of n.
  • pashmina politics — the adoption of political policies immediately after they have gone out of fashion
  • passenger traffic — number of passengers
  • passive obedience — unquestioning obedience to authority
  • paternalistically — the system, principle, or practice of managing or governing individuals, businesses, nations, etc., in the manner of a father dealing benevolently and often intrusively with his children: The employees objected to the paternalism of the old president.
  • pathological liar — a person who tells lies frequently, with no rational motive for doing so.
  • patriarchal cross — a Latin cross having a shorter crosspiece above the customary one.
  • per capita income — the total income of an area or country divided by the number of people in that area or country
  • per procurationem — by one acting as an agent; by proxy.
  • periodical cicada — seventeen-year locust.
  • peripheral device — peripheral
  • pernicious anemia — Pernicious anemia is a very severe blood disease.
  • perpetual spinach — a variety of spinach that keeps producing edible leaves
  • personal distance — personal space.
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